Gear Head: The gear head unit features a spur gear reduction/face gear drive. The 1/8 through 1 11-R die heads are held in position in the gear head by a heavy-duty retaining ring that allows for quick insertion and removal. The new 1 1/2 and 2 11-R die heads are directly inserted into the power drive.

Housing: The gear head is constructed of die cast aluminum while the motor housing and handle are formed from heavy-duty, glass-reinforced, industrial plastic. These elements make the 690 Power Drive a strong, light-weight, and easy-to-handle unit.

Safety Electrical Switch:A heavy-duty, paddle type lock-off switch automatically cuts off power when released and prevents accidental starting of the machine when not in use.